Belongs within: Ellobioidea. The Melampodinae are a group of ellobiid gastropods differing from other members of the family in the presence of a planktonic larval stage (Martins 1996). Characters (from Martins 1996): Protoconch heterostrophic, showing one-half of nuclear whorls above teleoconch. Reproductive system semidiaulic, with short spermoviduct, non-glandular pallial ducts, spermathecal duct entering at or… Continue reading Melampodinae